Window construction



Feb. 25, 1958 J. N. BLAIR 2,824,340

WINDOW coNs'TRucnoN Filed Dec. 22,' 955 s sheets-sheet 1 INVENTOR JUSEPHN. BLAIR Feb. 25, 1958 J. N. BLAIR 2,824,340

i WINDOW oNsTRUcTIoN Filedvec. 22, 1955 sheets-sheet z INVENTOR JOSEPHN; BLAIR BY ATTOR Y Feb. 25, 1958 J. N. BLAIR WINDOW coNs'rRucTioN FiledDec. 22, 14955 3 Sheets-Sheet 3 INVENTOR JOSEPH N. BLAIR United StatesPatent() 2,824,340 WINDOW CoNsTRUcTioN Joseph N. Blair, Detroit, Mich.

Application December 22, 1955, Serial No. 554,663

s Claims. (Cl. zo-49) This invention relates to window constructions andparticularly to constructions employing pivotal sash.

An object of the invention is to horizontally pivot a sash upon andbetween a pair of vertical slide bars so that it may be swung to affordeasy and safe cleaning of either face thereof, and further may beshifted up or down in unison with said bars to additionally facilitatecleaning.

Another object is to equip said slide bars with friction plates forbearing on the uprights of the window frame, and to regulate thepressure applied by such plates, so that the bars will be frictionallyretained in any selective sliding position.

Another object is to impose a spring pressureton a horizontally pivotedsash along its pivotal axis, and thus frictionally maintain any desiredpivotal position of the sash, to regulate ventilation or maintain apreferred posi tion for cleaning.

Another object is to afford a ready regulation of the friction applyingmeans.

Another object is to adapt my improved construction to be applied towindow frames of the type now commonly equipped with upper and lowersliding sash.

These and various other objects are attained in the device describedherein and illustrated in the accompanying drawings, wherein:

Fig. 1 is a cross sectional elevation of my improved windowconstruction, showing the sash thereof tilted in the window frame.

Fig. 2 is an edge elevational view of the unit formed by a slide bar anda sash pivoted on such bar, the direction of sight being indicated bythe line 2-2 of Fig. 3.

Fig. 3 is a vertical sectional view of such unit, taken on the line 3-3of Fig. 2.

Fig. 4 is a perspective view of a friction plate, a pair of which are tobe associated with each sash.

Fig. 5 is a fragmentary elevational view of said unit in partialsection, showing a tilted position of the sash, the direction of sightbeing indicated by the line 5-5 of Fig. 3.

Fig. 6 is a cross-sectional view of the same.

Fig. 7 is a horizontal cross-section on the line 7-7 of Fig. 3.

In these views, the reference character 1 designates an ordinarytwo-sash window frame, equipped with upper and lower sash 2 and 2a andwith the usual separating strips 3 between guide ways for such sash.Slidable up and down in each upright of the frame is a verticallyelongated bar 4 formed preferably of sheet metal bent to a channel form.The longitudinal margins of each such bar confront the correspondingframe upright and are flanged at 4a to slidingly seat on the upright.Each bar 4 presents to the sash a wall 4b forming a shallow channelcoextensive with said bar and having its depth gradually increased fromits margins to its medial vertical plane. Secured by screws 5 to eachupright of the sash is a sheet metal facing strip 6 having a slightconvexity adapting it to conform to and normally fit in said "ice .v 2 tchannel. Midway between the top andbottom edges of each sash upright,the latter has a socket 71o accommodate a pivotal bolt 8 having its head8a set within the corresponding bar 4. Within each socket 7, said boltmounts a coiled spring 9 compressed between the strip 6 and a cap 10retained on the bolt by a nut 11. Thus each such spring urges thecorresponding bar 4 against the sash under a predetermined pressure,while the two aligned bolts 8 pivot the sash to tilt relative to theslidable bars. In tilting the sash, its convex facing strips must escapefrom the shallow channels of the bars 4,

thus exercising a cam action on the bars to shift them slightly apartand impose a slight added compression on the coiled springs.

Set into the channel of each bar 4 beneath the corresponding bolt head8a is a reinforcing metal plate 12,

l such plate being thus held firmly against the channeled wall of thebar by the corresponding spring 9. A similar reinforcing plate 13 ispreferably carried by each sash upright, being interposed between suchupright and its facing strip 6. 4

Threaded into the ends of each reinforcing plate 12 are a pair ofheadless screws 14 which jointly carry `a vertif cally elongatedfriction plate 15 adapted to bear upon the window frame. The pressureapplied through the plates 15 may be regulated by rotating said screwsin the plate 12 to increase or diminish the spacing of each -frictionplate from its supporting plate 12. The screws 14 have their inner endsslotted (Fig. 3) or otherwise adapted to apply rotation, and each slidebar 4 is apertured at 16 to give access to said screws upon suitablytilting the corresponding sash.

To conveniently mount each friction plate on the corresponding screws14, while affording such screws a rotative adjustment, it is preferredto install on the end portions of each such plate a pair of brackets 17each having a key-hole slot 17a, the ends of eachy bracket being bent tospace its slotted portion from the friction plate. Near its end carryingsuch plate, each screw has an annular groove 18, and in installing theplate, the latter is rst positioned to locate the annular grooves in theplane established by the slots 17a, the enlarged ends of such slots thenreceiving the screws. Upon then sliding the friction plate lengthwise,the restricted portions of the key-hole slots are engaged in the groovesof the screws, thus aifording the screws free rotative adjustment, whileadapting the friction plate to be horizontally shifted by the screws. Itis preferred to curve the ends 19 of each friction plate slightly awayfrom the corresponding upright of the frame 1 so that such ends will notimpede up and down sliding of such plate, as'pressed against suchupright.

Cleaning the outer faces of window glass is made much easier and saferby permitting the sash to be substantially reversed in position, as inthe described construction, so that ready interior access may be had toexterior faces of the glass. Such faces cannot, in ordinary windows, bereadily reached except from the exterior of a building. Cleaning of bothfaces of the glass is facilitated further by permitting the sash to beraised or lowered preliminary to tilting thereof.

It is a highly desirable feature of the construction that theframe-engaging slide bars are firmly pressed against the sash when thelatter are closed so as to establish a quite secure weather seal. Theintertting relation of the slide bars and sash, when the latter areclosed, also adds to the weather-sealing effect.

It is to be noted that the coiled springs 9 exercise a dual function inmaintaining the aforementioned weather seal. when the sash are closedand in maintaining any tilted position of the sash so that a desired andselective ventilation may be had.

Regulation of pressure applied to the frame 1 by the friction plates 15is highly `desirable to assure equalization of such pressure, as appliedto opposite uprights of the frame, and inadapting the installatiomasstandard' ized, to any slight variations in the spacing of theuprightsof different'frames.- The regulated frictional resistance to upand down travel of the bars 4, serves to maintain any selected slidingposition of suchrbars eliminating necessity for? the usualcounterbalancing springs or weights.

The slight increase in compression of the springs 9, resulting fromtiltingl the 4sash is desirable since the sash haveea greater tendencyto vary from any tilted position than from theirfclosed positions inwhich they interiit with the bars 4;

--What I claim is: Y.

1. In a window construction of the-class comprising a frame having awindow opening and a' pair of opposed vertically elongated guideways, apair'of vertically elongated bars slidable up and down in saidguideways, a sash mounted in said opening between the slide bars, and

and further including an element secured to each bar and initiallyengageable in an enlarged end of said slot and annularly grooved toengage the margins of the restricted portion of said slot to retain thecorresponding plate on said element responsive to a sliding actuation ofthe plate.

4. A window construction as set forth in claim 3, said bracket beingvertically elongated and having a center portion spaced from andparallel to the corresponding plate, and havingrits ends rigidlyinterconnected with such plate, and said keyhole slot being formed insuch center portion.

a pair of horizontally aligned pivot members jointly A,

mounting the sash on the slide bars, the combination with said windowconstruction of a pair of friction plates respectively mounted on therespective guide bars and engageable with the guideways of the frame tomaintain selective vertical adjustments of the bars, and means mountingeach friction plate on the corresponding slide bar, including means forselectively spacing such plate from the corresponding bar.

2. A window constructionv as set forth in claim l, said friction platesbeing vertically elongated, and said mounting means being a pair ofscrews engaging the ends of each friction plate andhaving threadedengagement with said bar to effect said selective spacing.V

3. A window construction as set forth in claim 2, said friction platesbeing similarly vertically elongated, and said means mounting each plateon the corresponding slide bar including a bracket fixed on each plateand formed with a key hole slot elongated lengthwise of such plate,

5. In a window construction of the class comprising a frame having awindow opening and a pair of opposed vertically elongated guideways, apair of vertically elongated bars slidable up and down in saidguideways, a sash disposed in said opening between the paired bars, a'pair of horizontally aligned pivot members' jointly affording tilting ofthe sash on said bars, and spring means yieldably urging the barsagainst the sash, the combination with said elements of a pair offriction plates for respectively applying pressure to the respectiveguideways, a screw rotatively engaging each friction plate to mount suchplate on the corresponding 'slide bar and having threaded engagementwith such bar,` the bar having an aperture in vertically spaced relationto said pivot members to provide actuating access to such screw, in atilted position of the sash, whereby the sash covers said aperture whenoccupying the plane of the window opening, and said screw regulates thepressure' applied by the corresponding friction plate.

References Cited in the tile of this patent UNITED STATES PATENTS

